Build me a website

No problem, before we start I would like to know if you are able to create these features and if you saw the website reference for the app. 1. We need to make it so that the girl can see the instructor video while recording herself and even see herself on the video on a corner of the screen. 2. How are we going to make it automatically score the dance by comparing her dancing with the instructor? I have some ideas of how but I would like to hear your thoughts. 3. We need to make it so that the girl can sign up, create an account and give monthly fees. 4. We need to be able to upload new choreographies easily to the site and app. 5. Finally, we need to be able to change the angle of the camera, like a button to switch from the recordings of the front and side view so that it is easier for the girls to learn the dance.